Kostas Tournas is one of the pioneers of modern Greek rock. He is a singer and composer of many hits in the '70s including Ti Na Mas Kanei I Nychta.
He shaped Greek rock music in the late '60s along with groups such as Socrates Drank the Conium, Peloma Bokiou, Nostradamos and Hexadactylos. He is also one of the founder members of the pioneering Greek rock group Poll along with Robert Williams.
Tournas along with Robert Williams and Stavros Logarides, as members of the legendary rock group Poll, created a music wave which met with great success and took the music scene of Athens under the colonels by storm. Their music resonated with the young and created songs which still remain in the history of Greek rock.
His 1972 progressive-psychedelic solo album, rock opera Aperanta Horafia, is considered a landmark of Greek rock and an act of resistance against the junta which ruled Greece at the time.
His songs often deal with Space and Time and one of his greatest hits from his album Astroneira was I Michani Tou Chronou. He participated in the rock opera Trojan War composed by Yannis Petritsis along with Robert Williams and other Greek rock stars.